/*
 * Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_DTLS1_H
#define HEADER_DTLS1_H

#ifdef __cplusplus
extern "C" {
#endif

#define DTLS1_VERSION 0xFEFF
#define DTLS1_2_VERSION 0xFEFD
#define DTLS_MIN_VERSION DTLS1_VERSION
#define DTLS_MAX_VERSION DTLS1_2_VERSION
#define DTLS1_VERSION_MAJOR 0xFE

#define DTLS1_BAD_VER 0x0100

/* Special value for method supporting multiple versions */
#define DTLS_ANY_VERSION 0x1FFFF

/* lengths of messages */
/*
 * Actually the max cookie length in DTLS is 255. But we can't change this now
 * due to compatibility concerns.
 */
#define DTLS1_COOKIE_LENGTH 256

#define DTLS1_RT_HEADER_LENGTH 13

#define DTLS1_HM_HEADER_LENGTH 12

#define DTLS1_HM_BAD_FRAGMENT -2
#define DTLS1_HM_FRAGMENT_RETRY -3

#define DTLS1_CCS_HEADER_LENGTH 1

#define DTLS1_AL_HEADER_LENGTH 2

/* Timeout multipliers */
#define DTLS1_TMO_READ_COUNT 2
#define DTLS1_TMO_WRITE_COUNT 2

#define DTLS1_TMO_ALERT_COUNT 12

#ifdef __cplusplus
}
#endif
#endif
